Do you know???

Over 40 million species (types of organisms) exist with only about 2 million identified

Many organisms are unidentified & new species are still discovered

Biology is the study of all living things and how they interact with each other & their environment

Over long periods of time, species changed or evolved so that new species arose from earlier organisms & came to inhabit almost every part of the earth (bacteria living in thermal vents, parasites living inside another organism, etc.)

Organisms must adapt to their specific environment to survive & reproduce